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* getrandom was added in glibc 2.25 https://sourceware.org/bugzilla/show_bug.cgi?id=17252 * copy_file_range was added in glibc 2.27 https://sourceware.org/git/?p=glibc.git;a=commit;h=bad7a0c81f501fbbcc79af9eaa4b8254441c4a1f * threads.h should not exist for glibc < 2.28 * single_threaded.h should not exist for glibc < 2.35 * Apply suggestions from code review Co-authored-by: Alex Rønne Petersen <alex@alexrp.com> * 2.35 instead of 35 * before 2.35 instead of 2.34 and before --------- Co-authored-by: Alex Rønne Petersen <alex@alexrp.com>
50 lines
No EOL
1.7 KiB
C
Vendored
50 lines
No EOL
1.7 KiB
C
Vendored
/* Interfaces for obtaining random bytes.
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Copyright (C) 2016-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _SYS_RANDOM_H
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#define _SYS_RANDOM_H 1
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#include <features.h>
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#include <sys/types.h>
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/* Flags for use with getrandom. */
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#define GRND_NONBLOCK 0x01
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#define GRND_RANDOM 0x02
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#define GRND_INSECURE 0x04
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__BEGIN_DECLS
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// zig patch: getrandom and getentropy were added in glibc 2.25
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#if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 25) || __GLIBC__ > 2
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/* Write LENGTH bytes of randomness starting at BUFFER. Return the
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number of bytes written, or -1 on error. */
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ssize_t getrandom (void *__buffer, size_t __length,
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unsigned int __flags) __wur
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__attr_access ((__write_only__, 1, 2));
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/* Write LENGTH bytes of randomness starting at BUFFER. Return 0 on
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success or -1 on error. */
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int getentropy (void *__buffer, size_t __length) __wur
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__attr_access ((__write_only__, 1, 2));
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#endif /* glibc 2.25 or later */
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__END_DECLS
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#endif /* _SYS_RANDOM_H */ |